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1 ********************************************************************
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2 * MMap - Show memory block map
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3 *
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4 * $Id: mmap.asm,v 1.1.1.1 2001/02/21 23:30:54 boisy Exp $
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5 *
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6 * From Kevin Darling, "Inside OS9 Level II"
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7 *
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8 * Ed. Comments Who YY/MM/DD
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9 * ------------------------------------------------------------------
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10 * ? Original verison KKD 88/??/??
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11 * 4 Modified by Ken Drexler fr various block sizes KD 89/07/30
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12
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13 nam MMap
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14 ttl Memory Block Utility
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15
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16 ifp1
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17 use defsfile
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18 endc
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19
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20 Revs set ReEnt+1
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21 Type set Prgrm+Objct
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22 edition set 4
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23
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24 mod prglen,name,type,revs,MMap,datsiz
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25
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26 Name fcs /MMap/
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27 fcb edition
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28
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29 ***************************************************
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30 *
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31 * Data
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32 *
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33 buffsiz set 512
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34
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35 numflag rmb 1 flag for leading zeros
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36 rowcnt rmb 1 no rows to print
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37 free rmb 1 no free blocks
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38 rowno rmb 1 row number
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39 lcnt rmb 1 line length counter
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40 outptr rmb 2 output pointer
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41 out rmb 80 output buffer
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42 mapsiz rmb 2 size of map block
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43 blksiz rmb 2 block size
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44 buffer rmb buffsiz map itself
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45 stack rmb 200
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46 datsiz equ .
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47
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48 pag
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49 ***************************************************
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50 *
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51 * Messages
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52 *
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53 header fcc / 0 1 2 3 4 5 6 7 8 9 A B C D E F/
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54 fcb C$CR
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55 hdrlen equ *-header
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56
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57 hdr2 fcc / # = = = = = = = = = = = = = = = =/
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58 fcb C$CR
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59 hdrlen2 equ *-hdr2
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60
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61 BlockMsg fcc / Block Size: /
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62 blklen equ *-Blockmsg
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63
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64 Freemsg fcc / Free Blocks: /
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65 freelen equ *-Freemsg
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66
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67 Rammsg fcc / KBytes Free: /
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68 ramlen equ *-Rammsg
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69
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70 **********************************************
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71 *
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72 MMap lbsr pcrtn print line
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73 leax header,pcr print headers
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74 lda #1
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75 ldy #hdrlen
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76 os9 I$WritLn
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77 leax hdr2,pcr
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78 ldy #hdrlen2
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79 os9 I$WritLn
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80 leax buffer,u get block map to read
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81 os9 F$GBlkMp
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82 lbcs error
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83 std blksiz save block size
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84 sty mapsiz save map size
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85 clr free
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86 clr rowno
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87 ldd mapsiz compute number of rows
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88 lsra at 16 per row
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89 rorb
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90 lsra
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91 rorb
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92 lsra
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93 rorb
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94 lsra
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95 rorb
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96 stb rowcnt save count
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97 leax out,u
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98 stx outptr
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99 leax buffer,u point at map
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100 pshs x
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101 bra loop2
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102
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103 loop dec lcnt count -= 1
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104 bne loop3 if more, skip line print
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105
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106 * print line, start next line
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107 loop1 pshs x save map pointer
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108 lbsr prline print line
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109 dec rowcnt done?
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110 beq exit yes
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111 loop2 lda #16 set line length count
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112 sta lcnt
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113 lbsr Space 1 space
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114 lda rowno print row number
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115 lbsr Hex1
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116 inc rowno row number += 1
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117 lbsr space2 2 spaces
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118 puls x
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119
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120 * Print one block status
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121 loop3 ldb ,x+ get next block
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122 beq freeram
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123 bmi noram
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124 bitb #2 module?
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125 bne module
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126 lda #'U must be ram in use
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127 bra put
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128
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129 freeram lda #'_ not used
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130 inc free count it
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131 bra put
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132
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133 module lda #'M module
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134 bra put
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135
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136 noram lda #'. not ram
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137
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138 * Print character in A and space
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139 put equ *
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140 lbsr print put character in output buffer
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141 lda #C$SPAC add space
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142 lbsr print
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143
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144 bra loop
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145
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146 * Add summary messages
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147 Exit equ *
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148 leax BlockMsg,pcr print "Block Size"
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149 ldy #blklen
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150 lbsr Prstr
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151 ldd blksiz
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152 clr numflag suppress zeros
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153 bsr outdec
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154 lbsr prline print line
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155 leax freemsg,pcr print "Free Blocks"
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156 ldy #freelen
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157 lbsr Prstr
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158 ldb free get number of blocks
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159 clra
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160 clr numflag suppress zeros
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161 bsr outdec print in decimal
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162 bsr prline
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163 leax rammsg,pcr print "Ram Free"
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164 ldy #ramlen
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165 lbsr Prstr
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166 ldb free get number of blocks
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167 lda blksiz get #k/block
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168 lsra by dividing msb by 4
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169 lsra
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170 mul
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171 clr numflag suppress zeros
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172 bsr outdec print in decimal
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173 bsr prline
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174
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175 bye clrb no errors
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176
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177 error os9 F$Exit
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178
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179
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180 **********************************************
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181 *
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182 * Subroutines
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183 *
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184 Pcrtn pshs a,x Output carriage return
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185 lda #C$CR
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186 sta out
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187 leax out,u point at buffer
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188 ldy #1 one char.
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189 lda #1
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190 os9 I$WritLn
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191 puls a,x,pc
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192
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193
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194 ** Decimal output routine
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195 * IN: D - number to output
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196 * X - destination buffer
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197 * OUT: X,Y,U preserved
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198 *
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199 Outdec pshs b,x,y,u
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200 ldx outptr get pointer
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201 leau <dectbl,pcr
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202 ldy #5 set counter
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203
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204 Outdec1 clr ,s clear workspace
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205
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206 Outdec2 subd ,u subtract power of ten
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207 bcs outdec3
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208 inc ,s
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209 bra outdec2
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210
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211 outdec3 addd ,u++ add back one power
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212 pshs b save b
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213 ldb 1,s
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214 addb #'0 convert to ascii
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215 cmpb #'0 zero?
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216 bne outdec4 no, print it
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217 tst numflag suppress zero?
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218 beq outdec5 yes
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219 outdec4 inc numflag
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220 stb ,x+ put in buffer
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221 outdec5 puls b restore b
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222 leay -1,y counter -= 1
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223 bne outdec1
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224 stx outptr update pointer
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225 puls b,x,y,u,pc
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226
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227 Dectbl fdb 10000
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228 fdb 1000
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229 fdb 100
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230 fdb 10
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231 fdb 1
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232
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233
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234 * Print Line
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235 Prline ldx outptr now print line
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236 lda #C$CR
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237 sta ,x terminate line
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238 leax out,u
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239 ldy #80
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240 lda #1
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241 os9 I$Writln
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242 bcs error
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243 leax out,u set pointer
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244 stx outptr
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245 rts
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246
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247
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248 * Print Spaces
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249 Space2 bsr Space
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250
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251 Space lda #C$SPAC
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252 bra Print
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253
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254 * Print Hexidecimal Digit in A
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255 Hex1 tfr a,b
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256 lsra
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257 lsra
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258 lsra
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259 lsra
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260 bsr outhex
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261 tfr b,a
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262 Outhex anda #$0f
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263 cmpa #$0a 0 - 9
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264 bcs outdig
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265 adda #$07 A - F
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266 outdig adda #'0 make ASCII
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267 print pshs X
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268 ldx outptr
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269 sta ,X+
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270 stx outptr
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271 puls x,pc
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272
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273
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274 * Print string to output buffer
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275 * IN: X - string pointer
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276 * Y - string length
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277 *
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278 Prstr equ *
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279 lda ,x+ get character
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280 bsr print put in buffer
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281 leay -1,y
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282 bne Prstr
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283 rts
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284
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285 emod
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286 Prglen equ *
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287 end
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